package com.irony.eduservice.controller;



import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.irony.commonutils.R;
import com.irony.eduservice.entity.EduTeacher;
import com.irony.eduservice.entity.vo.TeacherQuery;
import com.irony.eduservice.service.EduTeacherService;
import com.irony.exception.OrangeException;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiParam;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.StreamUtils;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.*;

import java.util.List;

/**
 * <p>
 * 讲师 前端控制器
 * </p>
 *
 * @author testjava
 * @since 2020-04-16
 */
@Api( description = "教师管理")
@RestController
@RequestMapping("/eduservice/teacher")
@CrossOrigin  // 解决跨域问题
public class EduTeacherController {

    //注入service
    @Autowired
    private EduTeacherService teacherService;

    //查询教师表所有数据
    //rest风格
    @ApiOperation(value = "查询所有教师")
    @GetMapping("findAll")
    public R findAllteacher(){
        //调用service方法实现查询操作
        List<EduTeacher> list = teacherService.list(null);
        return R.ok().data("items",list);
    }

    //逻辑删除教师的方法
    @ApiOperation(value = "根据id逻辑删除教师")
    @DeleteMapping("delete/{id}")
    public R removeteacher(@ApiParam(name = "id",value = "教师ID",required = true) @PathVariable String id){

        boolean flag = teacherService.removeById(id);

        if (flag){
            return R.ok();
        }else {
            return R.error();
        }
    }

    //分页查询讲师的方法
    //current 当前页 limit 每页的记录数
    @ApiOperation(value = "分页查询讲师")
    @GetMapping("pageTeacher/{current}/{limit}")
    public R selectByLimit(@ApiParam(name = "current",value = "当前页",required = true)
                           @PathVariable long current,
                           @ApiParam(name = "limit",value = "每页记录数",required = true)
                           @PathVariable long limit){

        //创建Page对象
        Page<EduTeacher> pageTeacher = new Page<>(current,limit);

        try{
            int i =10/0;
        }catch (Exception e){
            throw new OrangeException(20001,"执行了自定义异常");
        }

        //调用方法实现分页
        //调用方法时底层将分页的所有数据都封装到pageTeacher中去
        teacherService.page(pageTeacher,null);

        long total = pageTeacher.getTotal();//总记录数
        List<EduTeacher> records = pageTeacher.getRecords();//数据的list集合

        return R.ok().data("total",total).data("rows",records);
    }

    //条件查询教师并分页
    @ApiOperation(value = "条件查询讲师并分页")
    @PostMapping("pageTeacherCondition/{current}/{limit}")
    public R pageTeacherCondition(@ApiParam(name = "current",value = "当前页",required = true)
                                  @PathVariable long current,
                                  @ApiParam(name = "limit",value = "每页记录数",required = true)
                                  @PathVariable long limit,
                                  @RequestBody(required = false) TeacherQuery teacherQuery){

        //创建一个page对象
        Page<EduTeacher> pageTeacher = new Page<>(current,limit);
        //构建条件
        QueryWrapper<EduTeacher> wrapper = new QueryWrapper<>();
        //多条件查询
        //判断条件是否为空
        String name = teacherQuery.getName();
        Integer level = teacherQuery.getLevel();
        String begin = teacherQuery.getBegin();
        String end = teacherQuery.getEnd();

        if(!StringUtils.isEmpty(name)){
            //构建条件
            wrapper.like("name",name);
        }

        if (!StringUtils.isEmpty(level)){
            wrapper.eq("level",level);
        }

        if (!StringUtils.isEmpty(begin)){
            wrapper.ge("gmt_create",begin);
        }

        if (!StringUtils.isEmpty(end)){
            wrapper.le("gmt_create",end);
        }

        //排序，为了前端页面更直观
        wrapper.orderByDesc("gmt_create");

        //调用方法
        teacherService.page(pageTeacher, wrapper);

        long total = pageTeacher.getTotal();//总记录数
        List<EduTeacher> records = pageTeacher.getRecords();//数据list集合

        return R.ok().data("total",total).data("rows",records);


    }

    //添加讲师
    @ApiOperation(value = "添加讲师")
    @PostMapping("addTeacher")
    public R addTeacher(@RequestBody EduTeacher eduTeacher){
        boolean save = teacherService.save(eduTeacher);

        if (save){
            return R.ok();
        }else {
            return R.error();
        }
    }


    //根据讲师id查询
    @ApiOperation(value = "根据id查询讲师")
    @GetMapping("getTeacher/{id}")
    public R getTeacher(@ApiParam(name = "id",value = "讲师ID",required = true)
                            @PathVariable String id){
        EduTeacher eduTeacher = teacherService.getById(id);

        return R.ok().data("teacher",eduTeacher);
    }

    //修改讲师功能
    @ApiOperation(value = "修改讲师")
    @PostMapping("updateTeacher")
    public R updateTeacher(@RequestBody EduTeacher eduTeacher){
        boolean flag = teacherService.updateById(eduTeacher);

        if (flag){
            return R.ok();
        }else{
            return R.error();
        }
    }
}

